(4-0.45×2+1.2)+(0.8×4-1.2×2)-(1.6×4-2×2)=...

Question

(4-0.45×2+1.2)+(0.8×4-1.2×2)-(1.6×4-2×2)=...

Answer 1

(4-0,45*2+1,2)+(0,8*4-1,2*2)-(1,6*4-2*2)=(4-0,9+1,2)+(3,2-2,4)-(6,4-4)=4,3+0,8-2,4=2,7